66345305734180 has 48 divisors (see below), whose sum is σ = 152027453765376. Its totient is φ = 24119789575680.

The previous prime is 66345305734109. The next prime is 66345305734187. The reversal of 66345305734180 is 8143750354366.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (66345305734187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35179884 + ... + 37017763.

It is an arithmetic number, because the mean of its divisors is an integer number (3167238620112).

Almost surely, 2^{66345305734180} is an apocalyptic number.

It is an amenable number.

66345305734180 is an abundant number, since it is smaller than the sum of its proper divisors (85682148031196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66345305734180 is a wasteful number, since it uses less digits than its factorization.

66345305734180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72201844 (or 72201842 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 55.

The spelling of 66345305734180 in words is "sixty-six trillion, three hundred forty-five billion, three hundred five million, seven hundred thirty-four thousand, one hundred eighty".